Mixing device



w. SEYMOUR MIXINGy DEvIcE Filed Feb. 10, 1926 1 plified the operation of forming the device' Patented July 31, 1928.

UNITED STATES WILLIAM SEYMOUR, 0F PATEK-SON, NEW JERSEY.

MIXING DEVICE.

Appiicat'ion inea February 1o, 192e.y seriai Naw-,225.

The principal object of this invention is to provide, at little expense and by simple mechanical operations, a device for both breaking up the liquid fuel constituent and mixing such constituent and the air of acoinbustible mixture. The device hereinafter set forth for accomplishing this object is especially adapted for use in connection with internal combustion engines, as in the manifold or equivalent connecting the car buretor with the engine, although its use is not necessarily limited to such an application, as will be apparent. The invention contemplates providing a passage having its surface roughened and the passage made spiral, whereby when a fluid is forced throughthe passage at the proper velocity it will be caused in swirling through the passage to impinge against the roughened surface, which will thus become a factor in breaking up or comminuting such liquid bodies as are being carried along and also in mixing 'the air or other gas therewith. In one form of the invention I have provided a suitable body with one or more (preferably several) bores therethrough having roughened, corrugated,` surfaces and in each such bore I have placed a spiral vane; this represents a simple way in which to forma spiral passage having the roughened surfacein fact, a plurality of such passages to each bore. The operation of forming a device suitable for the purpose may be still further simplied by tapping each bore with a screw-thread, thus to produce the roughened surface in the form of corrugations. In another form I have simwhen there are to be a number of'passages by providing a bored member or shell and fitting therein a member having spiral ribs to form with the shell the spiral passages.

In the accompanying drawing,

Fig. l shows the intake manifold of an internal combustion engine equipped with one form of the device of this invention;

Fig. 2 is a plan of the lower section of vthe manifold, containing this form of the-` device; Y

Fig. 3 is a vertical sectional'view of this form of the device removed and on a larger scale; and

Figs. 4 and 5 are a side elevatiompartly in section, and a section on line 55, Fig. l, of the other form. I

The manifold l may be conveniently formed twoy sections rprovided with flanges and adapted to be secured together bolts 2 connecting the flanges. The sections are somewhat enlarged internally to receive my device,.hereinafter described, as

shown at 3, and the chamber thus formed may be upwardly extended to receive also a Vgauze or other foi'aminous screen 4, for preventing admission to the engine of any solid particles carried along with the Huid travelling through the manifold,` and a. spacing sleeve 5 on which the screen rests and which I nally to produce a series of bores 7; in theexample shown there is one large vcentral bore and a number of smaller bores around it, but this is not material. Each bore is corrugated, and thisis most easily accomplished by screw-threading it.- Into each bore is forced with a driven fit a spiral vane 8.

The device thus formed occupies the chainber 3 and may be held fast therein by a setscrew 9. It may be remarked that the'ob- )ect 1n enlarging the manifold to form chamber 3 is partly to afford a seat, at 3, for said device, and partly to accommodate a body 6 of such diameter that the combined areas of the passages `formed therein may r approximate as nearly as possible the nor? mal cross-sectional area of the manifold passage, -to the end that introduction of the device into such When the device is inoperative position in the manifold and the engine running the Iair and liquid fuel supplied thereto, usually already in a state of mixture due to the action of the carburetor shown at l0 and def livering into the manifold, of course are 4forced through the several bores (that is to say, the spiral passages formed therein both sides of their contained varies) at great velocity, and in moving through .the passages vthey are caused to impinge against the roughened surfaces thereof, which action 'both results in abreaking up of the liquid fuel particles and enhances the mixing. of

fitted a member l2 having spiral external #LSSa e will not materiall choke the latter? g y y ribs d3 which form spiral passages with the shell l1. Member l2 may be itself bored and tapped and its borefitted with a spiral Vane 14, the saine as already described in 'reference to Figs. l to The advantage of be positioned in the intake manifold of an internal combustion engine comprising, in combination, a body having a rough-surfaced bor-e therethrough, a spiralsribbed element occupying and having its ribs at their outer edges in Contact with thc rough surface of the bore, said ribs and the roughened surface of the bore forming a spiral passage one side of which is constituted by said surface. Y

In testimony whereof I affix iny signature.

VILLIAM SEYMOUR; 

